package Meituan;

import com.alibaba.fastjson.JSONObject;

/**
 * @author: leiwenkang02@meituan.com
 * @date: 2018/9/11
 * @time: 16:15
 */
public class Test24 {
    public static void main(String[] args) {
        JSONObject actInfoJson = new JSONObject();
        actInfoJson.put("1", null);
        boolean flag = actInfoJson.get("1") == null;
        System.out.println(flag);

    }
}
